inclusion criteria: * tested positive for covid-19 with a sample collected in the prior 7 days * ability to read and speak english or spanish * ability to participate in the study for 4 weeks * being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) * ability to rinse/gargle * not having any condition that might worsen with gargling solutions * not having a history of mouthwash sensitivity * not having an allergy to any mouthwash that has been used before * not using another mouthwash/gargling solution since the most recent positive test * not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) * anticipated ability to participate in the study for 4 weeks * have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits, and can videoconference (like zoom) on a cellphone, tablet, or computer for sample collection instructions

inclusion criteria: * tested positive for covid-19 with a sample collected in the prior 7 days * ability to read and speak english or spanish * ability to participate in the study for 4 weeks * being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) * ability to rinse/gargle * not having any condition that might worsen with gargling solutions * not having a history of mouthwash sensitivity * not having an allergy to any mouthwash that has been used before * not using another mouthwash/gargling solution since the most recent positive test * not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) * anticipated ability to participate in the study for 4 weeks * have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits, and can videoconference (like zoom) on a cellphone, tablet, or computer for sample collection instructions

inclusion criteria: - tested positive for covid-19 with a sample collected in the prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) - ability to rinse/gargle - not having any condition that might worsen with gargling solutions - not having a history of mouthwash sensitivity - not having an allergy to any mouthwash that has been used before - not using another mouthwash/gargling solution since the most recent positive test - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits, and can videoconference (like zoom) on a cellphone, tablet, or computer for sample collection instructions

inclusion criteria: - tested positive for covid-19 with a sample collected in the prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) - ability to rinse/gargle - not having any condition that might worsen with gargling solutions - not having a history of mouthwash sensitivity - not having an allergy to any mouthwash that has been used before - not using another mouthwash/gargling solution since the most recent positive test - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits, and can videoconference (like zoom) on a cellphone, tablet, or computer for sample collection instructions

inclusion criteria: - tested positive for covid-19 with a sample collected in the prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) - ability to rinse/gargle - not having any condition that might worsen with gargling solutions - not having a history of mouthwash sensitivity - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits

inclusion criteria: - tested positive for covid-19 with a sample collected in the prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - being asymptomatic or having mild or moderate symptoms (for example, sore throat, coughing, fever, fatigue) - ability to rinse/gargle - not having any condition that might worsen with gargling solutions - not having a history of mouthwash sensitivity - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits

inclusion criteria: - tested positive for covid-19 in prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - ability to gargle - not having any condition that might worsen with gargling solutions - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits

inclusion criteria: - tested positive for covid-19 in prior 7 days - ability to read and speak english or spanish - ability to participate in the study for 4 weeks - ability to gargle - not having any condition that might worsen with gargling solutions - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits

inclusion criteria: - tested positive for covid-19 in prior 7 days - ability to read and speak in english - ability to participate in the study for 4 weeks - ability to gargle - not having any condition that might worsen with gargling solutions - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits

inclusion criteria: - tested positive for covid-19 in prior 7 days - ability to read and speak in english - ability to participate in the study for 4 weeks - ability to gargle - not having any condition that might worsen with gargling solutions - not having an allergy to a study mouthwash ingredient - not using another mouthwash/gargling solution - not taking antimicrobial medications (antibacterial, antiviral, antibiotics including off-label fda-approved medications such as hydroxychloroquine) - anticipated ability to participate in the study for 4 weeks - have a cellphone and agree to receive text messages for reminders to use mouthwash during the day and for follow-up visits